commands: implement response parser for outputs

src/commands/audio_output_devices/outputs.rs

@@ -4,6 +4,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::commands::{
     Command, Request, RequestParserResult, ResponseAttributes, ResponseParserError,
+    expect_property_type,
 };
 
 pub struct Outputs;
@@ -31,6 +32,131 @@ impl Command for Outputs {
     fn parse_response(
         _parts: ResponseAttributes<'_>,
     ) -> Result<Self::Response, ResponseParserError<'_>> {
-        unimplemented!()
+        let mut outputs = Vec::new();
+
+        let mut id: Option<u64> = None;
+        let mut name: Option<String> = None;
+        let mut plugin: Option<String> = None;
+        let mut enabled: Option<bool> = None;
+        let mut attributes: HashMap<String, String> = HashMap::new();
+
+        for (k, v) in _parts.0.into_iter() {
+            match k {
+                "outputid" => {
+                    // Reset and store the previous output if all fields are present
+                    if let (Some(id), Some(name), Some(plugin), Some(enabled)) =
+                        (id.take(), name.take(), plugin.take(), enabled.take())
+                    {
+                        outputs.push(Output {
+                            id,
+                            name,
+                            plugin,
+                            enabled,
+                            attribute: attributes,
+                        });
+                    }
+                    attributes = HashMap::new();
+                    let id_s = expect_property_type!(Some(v), k, Text);
+                    id = Some(
+                        id_s.parse::<u64>()
+                            .map_err(|_| ResponseParserError::SyntaxError(0, id_s))?,
+                    );
+                }
+                "outputname" => {
+                    name = Some(expect_property_type!(Some(v), k, Text).to_string());
+                }
+                "plugin" => {
+                    plugin = Some(expect_property_type!(Some(v), k, Text).to_string());
+                }
+                "outputenabled" => {
+                    let val_s = expect_property_type!(Some(v), k, Text);
+                    let val: u64 = val_s
+                        .parse::<u64>()
+                        .map_err(|_| ResponseParserError::SyntaxError(0, val_s))?;
+                    enabled = Some(val != 0);
+                }
+                "attribute" => {
+                    let value = expect_property_type!(Some(v), k, Text);
+                    let mut parts = value.splitn(2, '=');
+                    let attr_key = parts
+                        .next()
+                        .ok_or(ResponseParserError::SyntaxError(0, &value))?
+                        .to_string();
+                    let attr_value = parts
+                        .next()
+                        .ok_or(ResponseParserError::SyntaxError(0, &value))?
+                        .to_string();
+                    attributes.insert(attr_key, attr_value);
+                }
+                _ => {
+                    return Err(ResponseParserError::UnexpectedProperty(k));
+                }
+            }
+        }
+
+        // Store the last output if all fields are present
+        if let (Some(id), Some(name), Some(plugin), Some(enabled)) =
+            (id.take(), name.take(), plugin.take(), enabled.take())
+        {
+            outputs.push(Output {
+                id,
+                name,
+                plugin,
+                enabled,
+                attribute: attributes,
+            });
+        }
+
+        Ok(outputs)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use indoc::indoc;
+
+    use super::*;
+
+    #[test]
+    fn test_parse_response() {
+        let input = indoc! {"
+            outputid: 0
+            outputname: PipeWire Sound Server
+            plugin: pipewire
+            outputenabled: 1
+            outputid: 1
+            outputname: Visualizer feed
+            plugin: fifo
+            outputenabled: 1
+            attribute: fifo_path=/tmp/empidee-visualizer.fifo
+            OK
+        "};
+        let result = Outputs::parse_raw_response(input);
+        assert_eq!(
+            result,
+            Ok(vec![
+                Output {
+                    id: 0,
+                    name: "PipeWire Sound Server".to_string(),
+                    plugin: "pipewire".to_string(),
+                    enabled: true,
+                    attribute: HashMap::new(),
+                },
+                Output {
+                    id: 1,
+                    name: "Visualizer feed".to_string(),
+                    plugin: "fifo".to_string(),
+                    enabled: true,
+                    attribute: {
+                        let mut map = HashMap::new();
+                        map.insert(
+                            "fifo_path".to_string(),
+                            "/tmp/empidee-visualizer.fifo".to_string(),
+                        );
+                        map
+                    },
+                },
+            ])
+        );
     }
 }